A virtual executive assistant is worth it when the work you hand over is worth more per hour than the assistant costs, and when there is enough recurring admin to fill the hours. For most founders that threshold sits at roughly five hours a week of delegable work. An AI-trained assistant lowers the threshold further, because the recurring parts get automated rather than repeated.
Most people ask this question with a price in mind and a vague sense of guilt about the amount of admin they are doing personally. That is the wrong starting point. The fee is the easy number. The harder number is what your own hour is worth when it is spent on the work only you can do.
Below is the arithmetic we use with founders before they commit to anything, along with the situations where the honest answer is no.
Take the hours you spend each week on work that does not need your judgement: diary shuffling, inbox triage, expenses, travel, chasing, formatting documents, copying data between systems. Multiply that by a conservative value for your time. Compare it with the monthly fee.
The reason the answer is usually favourable is that the comparison is not really hours against hours. The hours you get back are your highest-value hours, and the hours you buy are competent, cheaper ones.
The fee is rarely what makes an engagement fail. What costs money is a vague brief, no access to the systems, and an executive who keeps doing the work themselves because explaining it feels slower than finishing it.
That first fortnight is genuinely an investment. Expect to spend two or three hours a week explaining context. The return arrives when that context is written down rather than repeated.
If your admin is unpredictable, under three hours a week and mostly requires you personally, a virtual assistant will sit idle and you will feel the fee. If your work is heavily physical or requires being in the room, the remit shrinks further.
There is also a readiness question. If you cannot yet describe what good looks like for a task, a fractional arrangement is a better first step than a full-time hire.
A traditional assistant absorbs your admin at a fixed rate: more work needs more hours. An AI-trained assistant maps the recurring parts and automates them inside your own systems, so the same hours cover more ground each month.
The practical effect is that the value curve keeps rising after month three, when a conventional arrangement has usually flattened out.
How much does a virtual executive assistant cost in the UK? Fractional arrangements typically run at a fraction of a full-time London EA salary once you account for national insurance, pension, equipment and holiday cover. The right comparison is total employment cost, not headline salary.
How many hours a week do I need before it is worth it? About five hours of genuinely delegable work each week is the usual break-even point. Below that, a fractional arrangement makes more sense than a full-time one.
How quickly should I expect a return? Most engagements are net positive by week four, once the diary and inbox run without supervision. The larger gains arrive in months two and three as recurring processes get automated.
What if it does not work out? Agree a written scope and a 30-day review at the start. If the delegable work is not there, that becomes obvious quickly and the arrangement can be adjusted rather than quietly continued.
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